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Expired Canadian patentCanada

Automated laser fusion system for high strength optical fiber splicing

CA 2024722 C · Owner: Jang, Soon · Inventors: Hinze, Lee R.; Jang, Soon; Hsu, Hui-Pin

CIPO record

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Its claims, description and drawings are in the Canadian Patents Database.

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Abstract From the Canadian patent

An automated computer controlled process optical fiber splicing system 11 which yields consistent high, strength, low loss, high quality splices. The system of the invention includes a positioning system 17 21, 29, and 31 for moving at least two optical fiber ends 15 and 19 into relative alignment at a junction 23. A high intensity beam of energy 37 is directed at the junction 23 of the fibers to achieve the high temperatures required for fusing the ends thereof. The focus of the beam 37 is adjusted to control the temperature profile of the energy applied to the junction 23.

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Listed from its CIPO record in Patent Yard's archive of Canadian patents past their term. Its claims, description and drawings are in the CIPO record and on Google Patents, and the Claude kit works from them.

Why it's free to use

  • Filed September 6, 1990 and granted November 22, 1994. A Canadian patent filed from October 1, 1989 lasts 20 years from filing, so its term ended September 6, 2010.
  • A certificate of supplementary protection adds at most two years for a drug, so even that would have ended by September 6, 2012.
  • We check Canadian rights only. A patent in its family in another country could still be in force: check its family on Google Patents.
FiledSeptember 6, 1990
GrantedNovember 22, 1994
Term endedSeptember 6, 2010
Patent numberCA 2024722 C
Classification (IPC)G02B6/25 +1 more

Timeline

Timeline From CIPO dates

1991199319951997199920012003200520072009Application filedSep 6, 1990Patent grantedNov 22, 1994Term endedSep 6, 2010

Sources & verification

Everything on this page comes from the CIPO record linked above. Contains information licensed under the Open Government Licence – Canada.